Sewing-machine



(No Model.)

J. VANNETTE.

2 SheetsSheet 1 SEWING:- MACHINE.

Patented Jan. 19, 1897.

a 3 if e 2 d, d g [66 d v Q wimassrasi INVENTOR v ymvwfi w BY XMLATTORNEY wAs (No M odeL) 2 SheetsSheet 2.

J. VANNETTE.

SEWING MACHINE.

No. 575,580. Patented Jan. 19, 1897 .WETNESSES:

; w A a 775W TTORNEYR UNITED STATES PATENT OFFICE.

JASPER VANNETTE, OF TIFFIN, OHIO, ASSIGNOR TO THE STANDARD SEWINGMACHINE COMPANY, OF CLEVELAND, OHIO.

SEWING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 575,580, dated January19, 1897. Application filed September 3, 1895. Serial No. 561,194. (Nomodel.)

To all whom it may concern.-

Be it known that I, JASPER VANNETTE, a citizen of the United States,residing at Tiffin, in the county of Seneca and State of Ohio, haveinvented certain new and useful Improvements in Sewing-Machines, ofwhich the following description, taken in connection with the drawingsherewith accompanying, is a specification.

My invention relates to that class of lockstitch sewing-machines inwhich the needlethread is carried around a bobbin containing theinterlocking-thread by means of a looptaker which operates either by wayof oscillation or of complete rotation; and it consists of additionalimprovements to those embodied in the machine forming the subject-matterof Letters Patent No. 526,470, granted to me September 25, 189i, theobject of my present invention being to secure a free and unobstructedpassage of the needle-thread loop around the bobbin-case and itsinclosed bobbin, in order to reduce the friction upon the thread and theconsequent wear and weakening of the same, and also to insure the properand free handling of the thread by the several parts when the machine isrun at high rates of speed.

In carrying my invention into effect I provide a verticall y-movin gbobbin-case frame or supporter, within which the bobbin-case, with itsinclosed bobbin, is supported in a manner to be movable therewith andalso be capable of vertical movement therein, so that said bobbin-case,which rests in a normal position upon the lower wall or walls of itssupporter when the machine is at rest, will be held stationary by thebobbin-thread upon the downward movement of the supporter, and besuspended by such thread above the lower supporting-walls of thedescending supporter, to leave a free and unobstructed space beneath itsunder side for the passage of the needlethread l00p,which is carriedaround the bobbin-case at this time by the loop-taker. While the loop isthus being carried around the bobbin-case, the supporter has a continueddownward movement to carry with it the bobbincase a sufficient distanceto pull off enough thread from the bobbin for the formation 0 thesucceeding stitch.

Referring to the accompanying drawings, Figure 1 represents a front endview of the lower part of a sewing-machine embodying my invention, alsoshowing the presser-foot and needle with a portion oftheirsupportingbars. Fig. 2 is a side view of the front end of themachine, looking from the right in Fig. 1, the bed-plate of the machinebeing in section. Fig. 3 is a face view of the bobbin-case supporterdetached from its position on the machine, showing the hinged face capor ring opened. Fig. at is a view of one of the rings forming part ofthe bobbin-case supporter broken from the other through their connecting-arm, showing the lugs or projections thereon for supporting thebobbin-case. Figs. 5 and 6 represent a face and top view,respectively,of thebobbin-case with its inclosed bobbin. Fig. 7 is anenlarged horizontal section through the projection on the bobbin-case,showing the construction of the tension device contained therein. Fig. 8is a detail view showing the relative positions of the bobbincase andits supporter at a certain time during the operation of the machine, aswill hereinafter be referred to in detail.

To explain in detail, a represents the bedplate of the machine; I), themovable bobbincase supporter; c, the bobbinoase, and (Z the loop-taker.

The bobbin-case supporter 1) consists of two rings 1) and b united by aconnecting piece or arm Z7 the ring I) being provided at one sidethereof with an extension in the form of a yoke 5 which latter embracesa driving cam or eccentric 6, located on a rotating shaft 9, journaledon the under side of the bed-plate, from which the supporter is operatedvertically to move in substantially a circular path. The opposite sideof the ring 1) is provided with an arm or extension b which extends andoperates through an opening located in a depending arm a on the underside of the bed-plate, which said depending arm serves both as a guideand support to the supporter, the latter being supported wholly at itsends and by its connection, as described.

The rings 1) and 6 between which the bobbin-case is loosely supportedlaterally to allow a free passage of the loop around the same, are eachprovided with an inwardlyprojecting lug b on their lower side and withan inwardly-projeeting lug 11 at or adjacent to their upper side,between which and the connecting-arm I) the bobbin-case is adapted to beretained and held from vertical. displacement. The space thus formedbetween the supporting and retaining lugs 71 and b and the arm I), inwhich the bobbin case is supported, is, according to my presentinvention, of grea tier dimensions vertically than the sustainedbobbin-case to allow vertical nmvcnient ot' the supporter independent ofthe bobbin-case, whereby the latter at a certain time during theformation of a stitch may be held vertically stationary during thedownward movement of the supporter, so that a tree and open space isprovided beneath the same [or the passage of the needle-thread loop(represented at 41:1) thereunder when carried by the loop-taker (Zaround or to the point below the same, where it is taken by the take-updevice, as will hereinafter be rel'erred to more in detail.

The outer ring Z) of the bobbin-case support er is provided with a ringb hinged thereto, which may be opened [or the insertion or removal ofthe bobbin-ease, and when closed is adapted to be secured by aturn-button Z) or other suitable latch. This hinged ring b is providedwith a spring-arm b which in the present instance shown projects fromone side thereof into the space within its inner rim and. is turned orbent back upon itself in the Form of a loop, the inner part1) of whichis in a position to loosely hold the bobbin in position within its case.

The bobbin-case c, in the present instance illustrated, consists of anopen-faced cylindrical shell, within which a diskl)0bbin c of ordinaryconstruction is loosely, supported.

The bobbin is held in position within its case 0 by the said spring-armb, carried by the su1 )porter b, which said arm extends in such positionrelative to the outer face of the bobbin as to hold the same looselywithin the ease and also allow a free passage of the thread-loop betweenthe same. Any suitable device might, however, be employed in lieu of thespring-arm Z) for holding the bobbin in position within its case 0, andbe carried by cit her the sup 'iorter Z) or said case 0. Theconstruction illustrated, however, I consider as the most preferable byreason of its cheapness and simplicity.

'lhe bobbin-case is provided with a lug or projection c on its upperside, which extends into a recess b, formed in the upper side of thebobbin-case supporter in the ring 1), such construction being adapted tohold the bobbin-case from rotary movement. The bobbin.- case is alsoprovided with a tension device 011 its uppersurface, \vhichis formed inthe present instance shown, as more clearly illustrated in lrig. 7, byan arm or extension c of the lug c and a spring-pressed pin c, supportedin an opening in said lug to act toward and against said arm 0", betweenwhich said stationary part o and yielding part c the bob bin-thread(represented at w) is adapted to be guided and receive its propertension. The pressure or tension of the pin c upon the thread isregulated by an adjusting-screw c, supported in said lug 0*, which actsupon said pin through the medium of an interposed spring 0.

The loop-taker (,Z, in the present instance illustrated, is of the sameconstruction and operation as that embodied in my said Letters PatentSo. 526,470, dated September 525, 189i. This said loop takcr, asdescribed and illustrated in said Letters Patent above referred to,consists of a loop-seizing hook (1', carried at one end of a tubularlever (1 which is supported and operated in a manner to move its forwardhoolecarrying end in a circular path around the bobbin-case. A plungerf,also provided with a loop-engaging hook f at its forward end, issupported within said tubular lever (Z and operated to slide back andforth therein and operate in combination with the hook d, as follows:When the end of the lever is in its highest position and theloop-seizing book (1 is entering the loop being thrown out by theneedle, the hook 1'" will be housed within or below the hook (l, butwhen the end of the lever (Z has moved down below the bobbin the hook fwill have moved away from the hook (1, so as to spread the thread-looplaterally in such manner that it will readily pass around thebobbin-case c, and also, by reason of such spreading, will preventfriction 011 the needle-thread. \Vhen the said books have reached aposition about central beneath the bobbin-case, the threadloop will beengaged by the said projecting lugs l) and be disengaged thereby fromthe hooks. After being thus released from the said hooks, the loop isengaged by the loop carrier (1 on the lever (P, as shown in Fig. 2, andcarried thereby beneath the bobbin-case to a position where it will bedrawn up by the usual take-up device. The particular c0nstruction ofthis loop-taker and its operation in engaging with the needle-threadloop and carrying it around the bobbin-case and inclosed bobbin to theposition to be drawn up by the take-up device are not of my presentinvention and therefore have not been further illustrated or describedherein.

In the operation of the machine the bobbincase supporter movesvertically in a circular path in opposition to the movement of theloop-taker in such manner that the supporter will be lowered when theloop-taker is above and be raised when the loop-taker is below the same,so as to permit a smaller loop to encircle the bobbin-case than wouldotherwise be possible. When the needle descends and throws out a loop inthe usual manner, the loop-taker engages with the same and carries itaround the bobbin-case and bobbin to a position to be drawn up by thetake-up, as before described. \Vhile the loop-taker is thus carrying theloop around toward the un- IIO der side of the bobbin-case, and beforeit has reached such position, the supporter h is operated to movedownwardly and from its position supporting the bobbin-case, the latterremaining stationary during such movement of the supporter, whereby afree and unobstructed space is provided between the under side of thebobbin-case and the supporter for the passage of the thread, as clearlyshown inFig. 8. The bobbin-case is thus held stationary at the downwardmovement of the supporter by the bobbin-thread, the hold of the tensiondevice upon the thread being sufficient to hold the bobbin-case withoutother support. The bobbin-case remains stationary, as described, untilit is engaged on its upper side by the supporter, as shown in Fig. 8, atwhich time the continued downward movement of the latter carries with itthe bobbin-case a sufficient distance to draw off enough slack threadfrom the bobbin for the formation of the succeedingv stitch.

The bobbin case supporter in the present instance shown is operated andtimed in its operations to move in combination with the loop-taker andbobbin-case in the manner as described by means of the driving-cam e atone side thereof and the angular guiding-arm b at the opposite endthereof.

Having thus set forth one practical embodiment of my invention, it willbe obvious that the construction and arrangement of the several partsmay be more or less materially modified without departure from myinvention. For instance, any suitable means for giving the bobbin-casesupporter its proper movement, as described, or any suitable loop-takerfor carrying the needle-thread loop around the bobbin-case, other thanthat as shown and described might be employed and be within the spiritof my invention.

Havingthus set forth my invention, What I claim as new, and desire tosecure by Letters Patent of the United States, is-

1. In a sewing-machine, the combination with the needle-bar and needleand their operating mechanism, of a bobbin-case and bobbin, a loop-taker for carrying the needlethread loop around the bobbin, averticallymoving bobbin-case supporter loosely supporting saidbobbin-case and bobbin, means for actuating said bobbin-case supporterso as to give it a vertical movement independent of the supportedbobbin-case throughout part of its downward movement, whereby thebobbin-case and bobbin may be supported and held stationary by thebobbin-thread at the beginning of the descent of the supporter, toprovide an open space or passage beneath the same for the passage of theneedle-thread loop thereunder, and means for supporting and guiding saidbobbin-case supporter whereby it will move in a vertical plane,substantially as described and for the purpose set forth.

2. In a sewing-machine, the combination with the needle-bar and needleand their operatin g mechanism, of a bobbin-case and bobbin, aloop-taker for carrying the needlethread loop around the bobbin, averticallymoving bobbin-case supporter carrying said bobbin-case andbobbin, consisting of two connected rings provided with bearing-surfacesbetween which the bobbin-case is retained, the space vertically betweensaid bearing-surfaces being greater than the diameter of thebobbin-case, whereby the bobbin-case and bobbin may be supported andheld stationary by the bobbin-thread at the beginning of the descent ofthe supporter, to provide an open space or passage beneath the same forthe passage of the needle-thread loop thereunder, a driving-shaftprovided with a cam or eccentric thereon for engaging with saidsupporter or a connected part thereof, and means for engaging with thesupporter or a connected part thereof, acting in combination with saidcam or eccentric to support and guide the said supporter whereby it willmove in a vertical plane, substantially as and for the purpose setforth.

3. In a sewing-machine, the combination with the needle-bar and needleand their operating mechanism, of a bobbin-case and bobbin, a loop-takerfor carrying the needlethread loop around the bobbin, a verticallymovingbobbin-case supporter loosely supporting said bobbin-case and bobbin,provided with an arm or extension thereon, means for engaging with saidarm or extension so as to support and guide the connected bobbincasesupporter whereby it will move in a vertical plane, and a rotating shaftprovided with a cam or eccentric thereon for operating the saidsupporter, substantially as described and for the purpose set forth.

JASPER V ANNETTE. Witnesses:

OHAs. J. YINGLING, J. O. STONER.

